Subject: [IBIS-Users] FW: Questions on numbers in IBIS
From: Angulo, John (john_angulo@mentorg.com)
Date: Mon Mar 01 2004 - 11:45:35 PST
The following is posted on behalf of Shawn Silverman at Quantic EMC, and Roy Leventhal. Please send any private replies to shawn@quantic-emc.com and Roy.Leventhal@ieee.org.
--------------------
From: Shawn Silverman [mailto:shawn@quantic-emc.com]
Sent: Thursday, February 26, 2004 4:18 PM
To: Roy Leventhal
Subject: Questions on numbers in IBIS
Hello, Roy. I have some confusion regarding numbers in an IBIS file. It states in section 3.8 that numbers with a suffix are meant to be interpreted as a number followed by any number of letters, where the first letter gives the actual scaling. For example, 3.0mOhms means 3.0e-3.
Now, there are several uses with voltages and resistances where this rule has some exceptions. I can specify 3.0V for voltage and 3.0ohm for ohms. Doesn't this violate the rules and therefore incorrect? Should I make a special case for "V" and "ohm" as a suffix when I parse numbers and ignore them? What happens if there is a unit with the same starting letter as a valid scaling suffix. Eg. 'f' as in 3.0farad?
Thanks!
-Shawn
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